西安地区黄胸鼠(Rattusflavipectus)的染色体研究  

Chromosome Study of Rattus flavipectus in Xi'an

作　　者：张锡然[1] 陈宜峰[1] 郭健民[2] 王建华[2] 范晖[2] 

机构地区：[1]南京师范大学 [2]陕西省动物研究所

出　　处：《南京师大学报（自然科学版）》1992年第4期54-57,共4页Journal of Nanjing Normal University(Natural Science Edition)

基　　金：国家自然科学基金

摘　　要：西安地区黄胸鼠(Rattus flavipectus)的核型分析结果表明,染色体数目2n=42。常染色体由13对末端着丝粒染色体以及7对小的中着丝粒染色体组成。性染色体XY 是一对大小不等的末端着丝粒染色体。时染色体的 G—带,C—带和 Ag—带也做了观察分析,所得结果与 Yosida(1973)的文献资料相比较可以看出,西安地区黄胸鼠的核型可能是从亚洲型黑家鼠(Rattus rattus tanezumi)演化而来的。The chromosomes of buff-breasted rat(Rattus flavipectus).captured at houses of Xi'an citywere karyotyped.The rasults showed that chromosomal diploid number was 2n=42,containing 13pairs of acro-,7 pairs of smaller metacenteic and XY sex chromosomes(large acro-and smallest acro-chromosome,respectively).The patterns of G-bands,C-bands,and Ag-bands were described.In com-parison with Yosida's reports(1073,1980),it seems that the karyotype of buff-breasted rat may origi-nate from basic Rattus karyotype in Asian black rat(Rattus Tattus tanezumi).

关 键 词：黄胸鼠 西安市 染色体 家鼠属 

分 类 号：Q959.837[生物学—动物学]